Update gitlab README and rolling upgrade job

Package Owner Merge Request

Package Changes

• Update to gitlab tag number in order to pull in updated README file.
• update rolling upgrade job

Related to:

• https://repo1.dso.mil/platform-one/big-bang/apps/developer-tools/gitlab/-/merge_requests/89
• https://repo1.dso.mil/platform-one/big-bang/apps/developer-tools/gitlab/-/merge_requests/90

package release

• https://repo1.dso.mil/platform-one/big-bang/apps/developer-tools/gitlab/-/releases/5.3.1-bb.1
• https://repo1.dso.mil/platform-one/big-bang/apps/developer-tools/gitlab/-/releases/5.3.1-bb.2

Closes #880 (closed)